Salix rosthornii Seemen (1900: 276)

He, Li & Chen, Shi-Pin, 2017, Identity of Salix chingiana (Salicaceae) from China, Phytotaxa 323 (1), pp. 97-100 : 98

Salix rosthornii Seemen (1900: 276)

Type:— CHINA. Chongqing: Nanchuan County, Ch. Bock & A. v. Rosthorn 1512 ( A 00031206 [fragm.]!, ♀; B, destroyed).—For image of type, see Fig. 1C .

= Salix glandulosa var. stenophylla C. Wang & C.Y. Yu in Anonymous (1974: 597). Type:— CHINA. Shaanxi: Ningshan, Guankou , 1100 m, 14 May 1959, J. Q. Xing 1850 (lectotype, designated here: WUK 119558 !; isolectotypes IBSC 0347202 !, NAS 00280024 !, ♀).—For image of the lectotype, see Fig. 1D .

Salix chingiana auct. Fang et al. (1999: 176) non K.S. Hao ex C.F. Fang & A.K. Skvortsov (1998: 468).

Trees or shrubs. Branchlets pilose when young, glabrescent. Stipules obliquely ovate, glandular serrate, caducous. Petiole 0.7–1.2 cm, pubescent, apex glandular or not; leaf blade lanceolate, elliptic-lanceolate, or oblong, rarely elliptic, 4–8.5 × 0.8–2.5 cm, abaxially light green, adaxially shiny, green, both surfaces glabrous, pubescent along veins when young, base cuneate, margin regularly glandular serrate, apex acuminate. Flowering coetaneous. Male catkin 3.5–6 cm × ca. 0.6 cm, loosely flowered; peduncle 1–2 cm, with 3(–6) leaflets; rachis pubescent; female catkin 3–4 cm × ca. 0.5 cm; flora bract ovate, downy at base. Male flower: adaxial and abaxial glands usually connected, forming a multifid disc; stamens 3–6, pubescent at base. Female flower: adaxial gland large, often clasping stipe, abaxial gland sometimes absent; ovary narrowly ovoid, glabrous, long stipitate; styles short, 2-lobed. Capsule ovoid, long stipitate.

Phenology:—Flowering March to April, and fruiting in May.

Habitat:—Streamsides; 650–1800 m.

Distribution:—Southern China (Anhui, Guizhou, Hubei, Hunan, Jiangxi, southern Shaanxi, southeastern Sichuan, and Zhejiang).

Note: — Chou et al. (1984) synonymized Salix glandulosa var. stenophylla C.Wang & C.Y.Yu in Anonymous (1974: 597) with S. rosthornii . Fang et al. (1999) followed this treatment. After examination of the type specimens of S. glandulosa var. stenophylla and S. rosthornii , we did not find relevant differences between them, and followed the treatment by Chou et al. (1984). The circumscription of S. rosthornii is emended as leaf blade 4–8.5 × 0.8–2.5 cm.

Salix glandulosa var. stenophylla was described by Wang & Yu in 1974, who cited J.Q. Xing 1850 as the type but did not state where the type specimens were conserved. Three duplicates of J.Q. Xing 1850 were found, one in WUK (WUK 119558), one in IBSC (IBSC 0347202, labeled as S. chingiana ), and one in NAS (NAS 00280024, labeled as S. chingiana ), and all characteristics were in agreement with the protologue of S. glandulosa var. stenophylla . The specimen WUK 119558 with a written label in Yu’s hand on 13 April 1966 was annotated as “ Salix glandulosa var. graciliar C.Wang et C.Y.Yu var. nov. ”, which is designated here as the lectotype under Art. 9.11 of the ICN (Melbourne Code, McNeill et al. 2012).

Representative specimens examined:— Salix spathulifolia var. glabra : CHINA. Qinghai: Huzhu County, Bei Shan National Park , 2706–2890 m, 22 July 2016, L. He & J. Zhao HL 53 , 55 , 56 , 57 & 58 (FJFC, ♀); Le Du District, Yaocaotai Forestry Centre, Xigou , 3033 m, 21 July 2016, L. He & J. Zhao HL 42 , 43 & 44 ( FJFC, ♀) .

Salix rosthornii : CHINA. Chongqing: Chengkou County, Beiping Town , 1800 m, 8 July 1959, Y. P. Li 3591 ( NAS, ♀) . Gansu: Shiquan County, Chaijiaguan, 1150 m, 18 June 1959, Zhiwudisidui Shi 3084 ( HNWP, ♀) ; Wen County, Bikou, Fanba , 720 m, 28 March 1972, Z. B. Wang 20507 ( HNWP, WUK, ♀), Z. B. Wang 20513 ( HNWP, WUK, ♂) ; ibidem, 650 m, 29 March 1972, Z. B. Wang 20536 ( HNWP, WUK, ♀) ; Wen County, Dianba , 910–950 m, 18 May 1976, H. J. Wang & Z. X. Hu 673 & 683 ( IBSC, WUK, ♀) .

Figures

FIGURE 1. Type specimens of Salix spathulifolia var. glabra, S. chingiana, S. rosthornii, and S. glandulosa var. stenophylla. A. Type of S. spathulifolia var. glabra (Y.H. Wu et al. 3241, HNWP 133744, available at http://www.cfh.ac.cn/nsii/vm/qtpmb/ specimenphotos/1337/133744.jpg), a1. female flowers (HNWP 133744); B. Holotype of S. chingiana (R.C. Ching 584, A 00031161, available at https://s3.amazonaws.com/huhwebimages/D24AC4BABDA4484/ type/full/31161.jpg); C. Type of S. rosthornii (Ch. Bock & A. v. Rosthorn 1512, A 00031206, available at https://s3.amazonaws.com/huhwebimages/ E72CA2DDD318417/type/full/31206.jpg). D. Lectotype of S. glandulosa var. stenophylla (J.Q. Xing 1850, WUK 119558), d1. female flower (WUK 119558).